<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<form action="login">

用户名<input type="text" name="username">
密码<input  type="text" name="password">
<br>
<input type="submit" value="登陆">

</form>
</body>
</html>